Datasheet

102
AT32UC3A
16.4.3 Interrupt Request Registers
Register Name: IRR0...IRR63
Access Type: Read-only
IRR: Interrupt Request line
0 = No interrupt request is pending on this input request input.
1 = An interrupt request is pending on this input request input.
The are 64 IRRs, one for each group. Each IRR has 32 bits, one for each possible interrupt request, for a total of 2048 pos-
sible input lines. The IRRs are read by the software interrupt handler in order to determine which interrupt request is
pending. The IRRs are sampled continuously, and are read-only.
31 30 29 28 27 26 25 24
IRR(32*x+31) IRR(32*x+30) IRR(32*x+29) IRR(32*x+28) IRR(32*x+27) IRR(32*x+26) IRR(32*x+25) IRR(32*x+24)
23 22 21 20 19 18 17 16
IRR(32*x+23) IRR(32*x+22) IRR(32*x+21) IRR(32*x+20) IRR(32*x+19) IRR(32*x+18) IRR(32*x+17) IRR(32*x+16)
15 14 13 12 11 10 9 8
IRR(32*x+15) IRR(32*x+14) IRR(32*x+13) IRR(32*x+12) IRR(32*x+11) IRR(32*x+10) IRR(32*x+9) IRR(32*x+8)
7 6 5 4 3 2 1 0
IRR(32*x+7) IRR(32*x+6) IRR(32*x+5) IRR(32*x+4) IRR(32*x+3) IRR(32*x+2) IRR(32*x+1) IRR(32*x+0)
32058K
AVR32-01/12